US 11,719,470 B2
Cryocooler and cryogenic system
Yoji Mizuno, Nishitokyo (JP)
Assigned to SUMITOMO HEAVY INDUSTRIES, LTD, Tokyo (JP)
Filed by SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on Jan. 27, 2021, as Appl. No. 17/160,361.
Claims priority of application No. 2020-029619 (JP), filed on Feb. 25, 2020.
Prior Publication US 2021/0262702 A1, Aug. 26, 2021
Int. Cl. F25B 9/14 (2006.01)
CPC F25B 9/14 (2013.01) 8 Claims
OG exemplary drawing
 
1. A cryocooler configured to be mountable on a vacuum container to cool a liquid refrigerant container, the cryocooler comprising:
an attachment flange forming a refrigerant gas chamber between a mounting port of the vacuum container and the attachment flange when the cryocooler is mounted on the mounting port, and movable in a detachment direction by raising a pressure of the refrigerant gas chamber; and
a cooling stage cooling an object to be cooled disposed inside the vacuum container and movable from a cooling position in contact with the object to be cooled to a non-cooling position separated from the object to be cooled in response to a movement of the attachment flange in the detachment direction,
wherein the refrigerant gas chamber is connected to the liquid refrigerant container,
wherein the cryocooler further comprises:
the liquid refrigerant container; and
a refrigerant gas pipe connecting the liquid refrigerant container to the refrigerant as chamber.